6TH International Congress on Technology - Engineering - Kuala Lumpur3 - Malaysia (2018-07-19)

Power Measurement By Calorimetric Method Using Water In Frequency Range Between 1.7 Mhz To 3 Mhz

Absorption is one of the most established processes for CO2 capturing. However, the current technologies used in this process suffer from several drawbacks including large column size, operating and maintenance issues. Ultrasound technique is a new alternative technology to assist the CO2 absorption process which is still under further developments. Different from sonophysical effect, the presence of sonochemical effect could also enhance the chemical reaction of absorption. Between all the influencing parameters, the ultrasonic power and the frequency are vital key parameters to investigate sonochemical effects during CO2 absorption process. Ultrasonic power is the output of the ultrasonic system produced from ultrasound transducer and must be measured accurately. The aim of this paper is to measure the ultrasonic power of an ultrasonic vessel. The total electrical power is measured by using the voltage and the flow. At the same time, the ultrasonic power is determined by using the calorimetric method. The measurements are done by using water with different volumes and repeated for three different frequencies in the vessel. The results show that almost 51% of the electrical power has been converted into the ultrasonic power and are independent of liquid volume.
Fatemeh Shokrollahi, Lau Kok Keong